A systematic review of glomerular hyperfiltration assessment and definition in the medical literature.

Cachat, François; Combescure, Christophe; Cauderay, Michel; Girardin, Eric; Chehade, Hassib (2015). A systematic review of glomerular hyperfiltration assessment and definition in the medical literature. Clinical journal of the American Society of Nephrology, 10(3), pp. 382-389. American Society of Nephrology 10.2215/CJN.03080314

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BACKGROUND AND OBJECTIVES Evaluation of glomerular hyperfiltration (GH) is difficult; the variable reported definitions impede comparisons between studies. A clear and universal definition of GH would help in comparing results of trials aimed at reducing GH. This study assessed how GH is measured and defined in the literature. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Three databases (Embase, MEDLINE, CINAHL) were systematically searched using the terms "hyperfiltration" or "glomerular hyperfiltration". All studies reporting a GH threshold or studying the effect of a high GFR in a continuous manner against another outcome of interest were included. RESULTS The literature search was performed from November 2012 to February 2013 and updated in August 2014. From 2013 retrieved studies, 405 studies were included. Threshold use to define GH was reported in 55.6% of studies. Of these, 88.4% used a single threshold and 11.6% used numerous thresholds adapted to participant sex or age. In 29.8% of the studies, the choice of a GH threshold was not based on a control group or literature references. After 2004, the use of GH threshold use increased (P<0.001), but the use of a control group to precisely define that GH threshold decreased significantly (P<0.001); the threshold did not differ among pediatric, adult, or mixed-age studies. The GH threshold ranged from 90.7 to 175 ml/min per 1.73 m(2) (median, 135 ml/min per 1.73 m(2)). CONCLUSION Thirty percent of studies did not justify the choice of threshold values. The decrease of GFR in the elderly was rarely considered in defining GH. From a methodologic point of view, an age- and sex-matched control group should be used to define a GH threshold.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine

UniBE Contributor:

Cachat, François

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1555-9041

Publisher:

American Society of Nephrology

Language:

English

Submitter:

André Schaller

Date Deposited:

11 Apr 2016 09:26

Last Modified:

11 Apr 2016 09:26

Publisher DOI:

10.2215/CJN.03080314

PubMed ID:

25568216

Uncontrolled Keywords:

creatinine clearance; diabetic nephropathy; glomerular hyperfiltration; hemodynamics and vascular regulation; hyperfiltration

BORIS DOI:

10.7892/boris.79333

URI:

https://boris.unibe.ch/id/eprint/79333

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